This summer one princess will learn that courtly manners only get you so far.

Random general: "They've abducted the Elements of Harmony!"
Celestia: "This means war!"
The kind of cut employed by trailers to construct dialogues out of completely unrelated scenes
Cadence: "My war."

That knights in shining armor aren't always who you'd expect.

Shining Armor: "But I can't go to the front!"
Princess Cadence: "Perhaps you can't." dramatic closeup "But I can."

That sometimes diplomacy has to be quiet and let the guns do the talking.

Cadence faces down a troop of griffins.
Griffin troop leader: "Surrender! You can't win!"
Cadence: "Watch me prove you wrong, chicken wings."
Cadence leaps up, brandishing two machine guns.

That friendship conquers all.

Cadence turns around to see Spike riding Shining Armor while holding a recently-fired rocket launcher.
Cadence: "But–"
Spike: "Did you think we'd leave Twilight hanging?"
Shining Armor: "Or you?"

This summer...

A building explodes as the trailer music's chorus goes into a crescendo.

...there will be...

An army of griffons flies towards the camera, blotting out the sun.

...hay to pay.

Cadence stands atop a burnt-out tank, levitating and firing several heavy machine guns at once.

Princess Cadence. This summer in theaters across Equestria.

Directed by Michael Bay and Kevin Sorbo.